Alternative Settings - US Robotics COURIER User Manual

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COURIER HIGH SPEED MODEMS
the Installation, and type the following command. (<Enter>
indicates pressing the Enter key.)
AT &81 &H1 <Enter>
To have the modem always use these settings as defaults,
type &Wat the end of the command string, before you press
the Enter key. The &W command causes the modem to
write the settings to nonvolatile memory.
Alternative Settings
Use the above command format to set the modem.
1.
Your machine or software doesn't support hardware flow
control, but your software supports XON /XOFF signaling:
&H2
The modem sends the computer Ctrl-S and Ctrl-Q
(XOFF /XON) characters to control the flow of
data. But see Guideline #2 below.
&Bl As in Step 2 under Recommended Settings, if your
software supports a fixed serial port rate.
2. Your machine or your software does not support hardware
flow control, and you're using an Xmodem-type file transfer
protocol:
&HO Flow control disabled (factory setting). Do not use
software flow control (&H2) because the protocol
control characters will be misinterpreted as flow
control characters, and you risk losing data.
&BO The serial port rate switches to match the connec-
tion rate of each call. Required because there is no
flow control.
3. Your system doesn't support either Clear to Send or
XON /XOFF signaling. In this case, we recommend that the
following configuration not be used for calls above 2400 bps.
&HO Flow control disabled (factory setting).
&BO
&MO
The serial port rate switches to match the
connection rate of each call. Required because
there is no flow control.
Error control disabled; recommended because
there is no flow control.
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